TAED Composite Form with Ionic Liquid for Solubility
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Solution Overview
Problem
Tetraacetylethylenediamine (TAED) forms I and II have low solubility and dissolution rates in water, limiting their effectiveness as bleach activators in laundry and dishwashing detergents.
Innovation Solution
A composite form of TAED is developed, comprising TAED and an ionic component such as a Deep Eutectic Solvent (DES) or Ionic Liquid (IL), which increases solubility and dissolution rate, allowing for higher concentrations of peracetic acid generation when combined with a bleaching agent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional crystalline forms of TAED (form I or form II) are used, then the structure is simple and stable, but the solubility and dissolution rate in water are very low
Solution Approach 1:
The patent applies composite materials by combining TAED with ionic components (ionic liquids or deep eutectic solvents) to create a composite form that achieves high solubility and dissolution rate while maintaining structural organization. The ionic component acts as a solvent matrix that enhances TAED's water interaction capabilities without compromising stability.
Solution Approach 2:
The patent changes the physical and chemical parameters of TAED by forming composite structures with ionic components. This includes changing the dissolution mechanism from direct water interaction to ionic-mediated dissolution, thereby achieving solubility greater than 2 g/L at 20°C and rapid dissolution rates while maintaining the active ingredient's effectiveness.
2Productivity
If the solubility of TAED is increased through composite forms, then the peracetic acid generation capability is enhanced, but the formulation complexity increases
Solution Approach 1:
The ionic component serves as an intermediary between TAED and water, facilitating the dissolution and subsequent peracetic acid generation process. The ionic liquid or deep eutectic solvent creates a medium that enhances TAED's accessibility to water while maintaining formulation stability and controlled reactivity.
Solution Approach 2:
The composite formulation changes the dissolution and reaction parameters by using ionic components that enhance mass transfer and reaction kinetics. This enables high concentrations of peracetic acid to be generated rapidly when the composite comes into contact with water and bleaching agents, achieving superior productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite form of TAED achieves significantly higher solubility and peracetic acid generation compared to marketed forms, ensuring effective bleaching performance in detergents.
Implementation Method 1
The composite form may comprise a surfactant... The TAED may be dispersed in a liquid composed of the ionic component
Implementation Method 2
the solubility of the TAED in the composite forms of the invention is typically considerably higher (around 4 g/L) than for marketed forms at 20° C. Thus, the composite forms of the invention are able to generate peracetic acid at high concentrations in water when in contact with an appropriate bleaching agent
Implementation Method 3
Form I has very low solubility (0.2 g/litre at 20° C.) and a low dissolution rate in water... The TAED in the composite forms of the invention typically has a solubility greater than or equal about 2 g/L at 20° C.
Data Source
AI summary
The present invention relates to a composite form of tetraacetylethylenediamine (TAED) and a method for its preparation. The composite form may comprise a new crystalline form. The invention also relates to the crystalline form itself. The present invention also relates to compositions comprising tetraacetylethylenediamine in these forms.